TPS51211 Datasheet, PDF (8/26 Pages) Texas Instruments – HIGH PERFORMANCE, SINGLE SYNCHRONOUS STEP-DOWN CONTROLLER FOR NOTEBOOK POWER SUPPLY

TPS51211
SLUSAA7 – NOVEMBER 2010
TYPICAL CHARACTERISTICS
V5IN SUPPLY CURRENT
vs
JUNCTION TEMPERATURE
V5IN SHUTDOWN CURRENT
vs
JUNCTION TEMPERATURE
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1000
800
V_V5IN = 5 V
V_EN = 5 V
V_VFB = 0.735 V
No Load
600
20
18 ^VV5IN ^{= 5 V}
V_EN = 0 V
16 ^{No Load}
14
12
10
400
8
6
200
4
2
0
–50
0
50
100
150
T_J – Junction Temperature – °C
Figure 1.
0
–50
0
50
100
150
T_J – Junction Temperature – °C
Figure 2.
OVP/UVP THRESHOLD
vs
JUNCTION TEMPERATURE
150
V_V5IN = 5 V
OVP
100
UVP
50
0
–50
0
50
100
150
T_J – Junction Temperature – °C
Figure 3.
CURRENT SENSE CURRENT (I_TRIP)
vs
JUNCTION TEMPERATURE
20
18 ^V_V5IN ^{= 5 V}
V_TRIP = 1 V
16
14
12
10
8
6
4
2
0
–50
0
50
100
150
T_J – Junction Temperature – °C
Figure 4.
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